Não informado. (1940). American Journal of Veterinary Research. American Veterinary Medical Association.
Lua i Stíl Chicago (17ú heag.)Não informado. American Journal of Veterinary Research. Chicago, Ill: American Veterinary Medical Association, 1940.
Lua MLA (8ú heag.)Não informado. American Journal of Veterinary Research. American Veterinary Medical Association, 1940.
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